Antarctic oscillation

The Antarctic oscillation (AAO, to distinguish it from the Arctic oscillation or AO) is a mode of atmospheric variability of the southern hemisphere. It is also known as the Southern Annular Mode (SAM) or Southern Hemisphere Annular Mode (SHAM).

External links

• http://www.cpc.ncep.noaa.gov/products/precip/CWlink/daily_ao_index/aao/aao.loading.html